Exhaust-head



(Ne Medel.)

P.YR. CRAWFORD.

EXHAUSTAHEAD. 146.434,042. Patented Aug. 12, 1899.

Www/@swag Iwan/201 UNITED STATESA PATENT Y OFFICE.`

PETER R. CRAWFORD, OF CLEVELAND, OHIO.

XHAUSTH AD.

SPECIFICATION forming part of Letters Patent No. 434,042, dated August12, 1890.

Application tiled December 2, 1889 Serial No. 332,313. (No model.)

To all whom it may concern.-

Be it known that I, PETER R. CRAWFORD, of Cleveland, in the county ofCuyahoga and State of Ohio, have invented certain new and usefulImprovements in Exhaust-Heads; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and usethe same.

My invention relates to improvements in exhaust-heads; and it consistsin certain features of construction and in combination of partshereinafter described, and pointed out in the claim.

In the accompanying drawings, Figure l is a side elevation, partly insection. Fig. 2 is a side elevation, wholly iu section, through thecenter of the device.

A represents the outer wall or casing, the same being preferably ofsheet metal, and of the inverted-truncated-cone shape shown. Casing A isusually riveted to the lower castiron head A', although this head couldbe made of wrought metal, if desired. The lower head has a centralopening for receiving the exhaust-pipe B. Head A has also attached adrip-pipe a. The upper head A2 is usually of plate metal, concaved,asshown, and bolted to the outwardly-flanged upper 3o end section ofcasingl A, as shown at a.

Head A2 has a central opening provided With a short depending pipe a2.Inside the casing and located next below pipe a2 is a dishshapedsheet-metal diaphragm C, the periphery whereof is secured to casing A,usually by rivets, this diaphragm having a central opening C. Thediaphragm has attached a series of depending stays c for supportingdeflector D. The latter is usually of sheet metal, and of the inverted-cone shape shown, and having attached a crowning head or cover D.The deiiector is provided with a series of struts or braces cl, that inturn are secured to wall A, preferably by riveting. The deector at itslargest diameter is something less than the internal diameter of theopposing section of the casing, so that there is ample space between thedeiiector and casing for the upward passage of the steam.

The object of the exhaust-head is twofoldrst, to prevent theexhauststeam from condensing and falling upon buildings and otherproperty, whereby would accrue great damage, especially in cities andlarge towns; and, second, to save the condensed water, so that it can beused-for instance, in the steamgenerator, or for other purposes wherecondensed water is desirable. Tol prevent as far as possible the escapeof exhaust-steam, the exhaust-head is made large and of thin sheet metalin the main, that, being exposed to the air, condenses the most ofthesteam in passing through the exhaust-head.

The steam on entering pipe B iirst strikes the deiiector, by means ofwhich the steam is distributed over the internal surface of casing A,nearly to the top of the casing,where it is arrested and returned to thecenter, and

passing through opening C' can again expand and lill the casingunderneath ,the upper head, and of course above the diaphragm. Thisupper head being exposed to the air is very effective in condensing thesteam. The upper head is concaved, as shown, for the purpose ofreturning any condensed water that may lodge thereon back into theexhaust-head. The dish-shaped diaphragm C performs the same ofce indischarging the water downward onto head D of the deflect'or, and thisbeing crowning the water drips off and falls onto the inner surface ofwall A, from whence it gravitates to the bottom and is dischargedthrough pipe a. To the lat-ter may be attached a pipe leading towherever the condensed water is wanted.

hat I claim is- An exhaust-head comprising inverted conical casinghaving concaved upper head, dishshaped diaphragm joined to the walls ofthe casing below the conical head, inverted conical deflector having acrowning upper end, said deflector being supported below the diaphragm,drip-pipe connected with the casing, and central opening throughdiaphragm and upper head, the parts being arranged substantially as setforth.

In testimony whereof I sign this specification, in the presence of twowitnesses, this 14th day of November, 1889.

PETER R. CRAWFORD. Witnesses:

C. H. DORER, ALBERT E. LYNCH.

